A structural perspective of how T cell receptors recognize the CD1 family of lipid antigen-presenting molecules.

J Biol Chem

Infection and Immunity Program and Department of Biochemistry and Molecular Biology, Biomedicine Discovery Institute, Monash University, Victoria, Australia; Institute of Infection and Immunity, Cardiff University, School of Medicine, Cardiff, UK. Electronic address:

Published: August 2024

The CD1 family of antigen-presenting molecules adopt a major histocompatibility complex class I (MHC-I) fold. Whereas MHC molecules present peptides, the CD1 family has evolved to bind self- and foreign-lipids. The CD1 family of antigen-presenting molecules comprises four members-CD1a, CD1b, CD1c, and CD1d-that differ in their architecture around the lipid-binding cleft, thereby enabling diverse lipids to be accommodated. These CD1-lipid complexes are recognized by T cell receptors (TCRs) expressed on T cells, either through dual recognition of CD1 and lipid or in a new model whereby the TCR directly contacts CD1, thereby triggering an immune response. Chemical syntheses of lipid antigens, and analogs thereof, have been crucial in understanding the underlying specificity of T cell-mediated lipid immunity. This review will focus on our current understanding of how TCRs interact with CD1-lipid complexes, highlighting how it can be fundamentally different from TCR-MHC-peptide corecognition.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jbc.2024.107511DOI Listing

Publication Analysis

Top Keywords

cd1 family
16
antigen-presenting molecules
12
cell receptors
8
family antigen-presenting
8
cd1-lipid complexes
8
cd1
6
structural perspective
4
perspective cell
4
receptors recognize
4
recognize cd1
4

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!